Improvement in hydraulic housings for rolls



G. H. SELLERS. HYDRAULIC HOUSING FOR ROLLS. N0.103, 667. Patented May31, 1870.

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GEORGE H. SELLERS, OF WILMINGTON, DELAWARE.

v Letters Patent No. 103,667 dated May 31, 1870.

IMPROVEMENT I'N HYDRAULIC 'I-IOUS'ING-S FOR ROLLS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whomit may concern:

Be it known that I, GEORGE H. SELLnns, formerly of Phoenixville, in thecounty of Chester, and State of Pennsylvania, but now residing at\Vih'nington, in a the county of New Castle, and State of Delaware, haveinvented certain new and useful Improvements in Hydraulic Housings forRolling-Mills, of which the following is a. sufiicient description andspecifica- 7 increased.

Ellhe objectof my invention is, in such a mill, with: out the use of anycook or valve whatever, and without any escape or discharge of thefluid, not only to secure a perfect regulation and'adjustment of one ormore of the rolls, but also to make it practicable for the rolls to beadvanced or retired toward or from each other while the work is passingthrough them, soas to roll tapers and pieces of varying thicknesses indif-' spondingly diiferent diameters, operating in their respectivecylinders, the fluid in all the cylinders of each set being confined tothat set, but its "flow from one cylinder to another of the same setbeing unobstructed by cocks or valves, and regulated solely by theplungers, as hereinafter more fully set forth.

In the accompanying drawings, which illustrate the invention hereinclaimed- Figure 1 is a view in perspective, and I Figure 2, a verticalcentral section through the same.

"A suitable foundation, B- B, supports the bed-plates A A of thehousings G' 0, having lugs a a projecting laterally from their base andresting upon the bed plates.

Bolts 71 I; pass through these lugs into longitudinal grooves or ways 0c in the bed-plates, the heads of the bolts fitting in these grooves.

The bed-plates and housings are thus firmly clamped together, while thehousings may be moved along the bed-plates to adjust them properlyrelatively to the rolls, as well as to permit the rolls to be removed.

In this example journal-boxes D E I, provided with proper bearings, d ef, forthe necks of the rolls, are mounted in the housings.

-. The central box. IE. is fixed in the housings, but the upper andlower boxes, D F, are movable in vertical ways, formed, in thisinstance, by flanges on the boxes, overlapping the sidesof the housings.

The boxes 1) F are forced toward each other by plungers, G H, moving inproperly-packed cylinders,

n m, in the housings.

Each of these plungers is mediatel y operated through the fluid by itsrespective plunger g it, moving in a corresponding reservoir, t' 7;,those reservoirs "L It being of larger area than the diameters of theplungers g 72 rel spectively, so that, while the plungers g h force thefluid from the reservoirs i k, respectively, into the cylinders n m,there always remains an annular space in the reservoirs i. 7. aroundthe'pluugers g h, rcspcctively, through which the ebb and flow ofthefluid between all of the cylinders of the same set is permitted.

The fluid thus forced into the cylinders a m pushes out the plungers GH, which correspondingly move their respective boxes D F toward thecentral box IE, and thus cause the'rolls mounted in these bOXesLD ll toapproach each other.

to prevent leakage. The box 1) being counterweighte'd in the ordinarywill flow back from the cylinders n m to the reservoirs e 7;respectively. I

The plunge-rs g It may beoperated by any well-known mechanical means,such as levers, screws, cams, or racks. and pinions, and, being of muchsmaller diameter than the plungcrs G'H, they will very accuratelyindicate the adjustment of the rolls. If, for instance, the plungers ghwere made of one-tenth the area of the plunger-s G H, then the movementof the plungers g it one inch would move the plungers G H one-tenth ofan inch.

Screw-p "s p q, in the cylinders n m, are'convenient for relcash. therolls when jammed, as, by unscrewing them, and thus allowing the fluidto escape, the pressure upon the rolls will at once be relieved.

'Iwo or more small plungers may be used in the reservoirs to actuate thelarge plungers in the cylinders.

l onrolling tapered iron, the plungers g h'may be connected with theroll-train by any well-known mechanical device, in such manner as to beautomatically moved thereby, so as to cause the rolls gradually torecede from or approach toward each other, as required for this kindofwork. 4

For rolling iron of irregular or varying thicknesses in difierent parts,a correspondii'igly irregular or varying motion must be imparted to theplungers g h, and these motions can also be derived from the roll-trainby any of the well-known mechanical devices to that end.

The plungersmovc through boxes packed properly;

manner, when the plun ersy h are retracted the fluid In either of thesecases the connection or disconnec-,

In arolling-mill, the rolls of which are to be adjusted by hydraulicpressure, the combination with the rol s of cylinders of differentareas, and plnngers of correspondingly different diameters, thefcrcing-plungers h being smaller than the reservoirs z k, in which theyoperate, respectively, substantially as and for the purpose described.

GEO. H. SELLERS.

Witnesses:

ELI GARRETT,

WM. 13. Wreems.

